IEC 61131 2 programmable controllers equipment requirements and tests

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1.2 Compliance with this standard

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1.3 Normative references

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IEC 60364 (all parts), Electrical installations of buildings

g ¡ven in Clauses 6, 9 and 12,

2.1 Equipment to be tested (equipment under test/EUT)

Sixth paragraph

instead of:

NOTE The application of statistical criteria based on samples for a large number of 110s (for example, >loo) may be considered

Copyright International Electrotechnical Commission

Provided by IHS under license with IEC Licensee=Technip Abu Dabhi/5931917101

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3.43 overvoltage category (of a circuit or within an electrical system)

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -Add Subclause 4.3.2 as follows:

4.3.2 Relative humidity

The relative humidity range is 10 % to 95 %, non-condensing

Requirements of this subclause are verified in accordance with 6.1.3

Replace the following subclauses by 4.3.3, 4.3.4 and 4.3.5

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Table 6 - Rated values and operating ranges of incoming power supply

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Last paragraph after Figure 3, note:

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5.2.2 Terminology (UA operating regions)

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5.2.1 I Terminology (UA operating regions)

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Figure 4 - U-l operation regions of current-sinking inputs

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5.2.3 Standard operating ranges for digital inputs (current sinking)

read:

5.2.1.2 Standard operating ranges for digital inputs (current sinking)

Table 7 - Standard operating ranges for digital inputs (current sinking)

In note (3), replace “See 4.1.1 I ” by “See 5.1 I 1”

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -Add, at the end of the table, the following notes:

NOTE Compatibility with 2-wire proximity switches according to IEC 60947-5-2 is possible with Type 2 See also (3)

Table 8 - Rated values and operating ranges for current sourcing digital a.c outputs

In the tenth line, replace “(see Figure 6)” by “(see Figure 5)”

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Inst ea d of:

5.2.5.2 Add i tio na1 req u i rem ents

read:

5.2.2.2 Add i tio na1 req u i rem ents

and change the numbering of the following five subclauses as follows: 5.2.5.2.1 to 5.2.2.2.1, 5.2.5.2.2 to 5.2.2.2.2, 5.2.5.2.3 to 5.2.2.2.3, 5.2.5.2.4 to 5.2.2.2.4 and 5.2.5.2.5 to 5.2.2.2.5

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -5.2.3 Digital outputs for direct current (current sourcing)

and change the numbering of the following two subclauses as follows: 5.2.6.1 to 5.2.3.1, 5.2.5.2 to 5.2.3.2

Table 9 - Rated values and operating ranges (d.c.) for current-sourcing digital d.c outputs

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Table 10 - Rated values and impedance limits for analogue inputs

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5.7 Peripherals (PADTs, TES, HMIs) requirements

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Table 12 - Dry-heat and cold withstand tests

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Table 13 - Change of temperature, withstand and immunity tests

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Recover

read:

Recovery

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Table 14 - Cyclic (1 2 + 12) damp-heat

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Table 23 - Supply voltage variation tests

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -Table 26 - Overload and short-circuit tests for digital outputs

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7.1 Information on type and content of documentation

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“Information on catalogues and datasheets”

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Table 29 - Criteria to prove the performance of a PLC-system against EMC disturbances

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Table 30 - Radiated immunity and enclosure ports

Note ( I ) , first line

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8.3.3 General radiated immunity limits

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Table 36 - Electrostatic discharge immunity test

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -read:

“According to PFVP (2.5)

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Table 40 - High-energy surge immunity test

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2Q2/18 pF DM” with “AC/DC power (F)”

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Table 41- Conducted RF immunity test

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1 O Electromagnetic compatibility (EMC) information to be provided by the manufacturer

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11.1 Protection against electrical shock

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11.1.1.1 Values in normal condition

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11 I 3 Enclosed PLC-system equipment

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11.1.3.2 Class II equipment

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“ from hazardous live parts ”

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -11.1.5 Operator accessibility

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11.4 Clearance and creepage distances requirements

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values ”

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Table 53 and Table 54.” by “ Tables 47, 48, 49, 50, 52, 53 and 54.”

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paragraphs of one single note

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11.4.1.1 Clearance for other than field-wiring terminals

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Table 47 - Minimum clearances in air corresponding to overvoltage category II conditions (except for field-wiring terminals) for basic/supplementary insulation

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Table 48

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11.4.1.2 Field-wiring terminal clearances

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Table 49 - Minimum clearances in air at field-wiring terminals

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Table 50 - Minimum clearances in air for micro-environment where the voltages are known and control led

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1 1.4.3 Creepage distances for basic and supplementary insulation

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11.5.2 Non-metallic material supporting live parts

First paragraph, second sentence

Component parts and materials shall

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Table 56

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Table 55

Table 55 - Temperature limits

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1 1.9.1 Protective earthing constructional requirements

Second paragraph:

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ments for information on safet!

Table 56 - Impact withstand test (1)

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Table 57 - Operator accessibility tests (1)

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12.2.1 Dielectric withstand verification test

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Figure 14

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13.2 Dielectric withstand verification test

First paragraph, first and last lines:

14 Safety information to be provided by the manufacturer

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14.2 Information on mechanical terminal connection

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C 1 Jointed test finger

Text under Figure C 1:

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Figure E l - Creepage distances of circuits where recurring peak voltages are generated

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Zone 1, first line:

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -Zone 2, second paragraph,first line:

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -As from 1 January 1997 all IEC publications are issued with a designation in the

60000 series For example, IEC 34-1 is now referred to as IEC 60034-1

Consolidated editions

The IEC is now publishing consolidated versions of its publications For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publication incorporating amendments 1 and 2

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Spécifications et essais des équipements

No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the publisher

Intemational Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-I211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 O0 E-mail: inmail@iec.ch Web: www.iec.ch

International Electrotechnical Commission MeXflyHapOflHaR 3neKTpOTeXHWIeCKaR KOMMCCMR

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -CONTENTS

FOREWORD 7

INTRODUCTION 9

1 General 10

Scope and object 10

Compliance with this standard 11

2 Type tests 13

2.1 2.2 Special features for immunity and EMC tests 15

2.3 Withstand test conditions 16

2.4 Verification procedure 16

2.5 Requirements for test programmes and proper functioning verification 2.6 Terms and definitions 17

Climatic conditions and requirements 24

Transport and storage conditions and requirements 26

Special conditions and requirements 28

5 Functional requirements 28

5.1 5.2 Digital I/Os 31

5.3 Analogue I/Os 38

5.4 Communication interface requirements 39

5.5 5.6 Remote input/output stations (RIOSc) requirements 39

5.7 5.8 PLC-system self-tests and diagnostics requirements 40

5.9 Functional earthing 40

5.1 O 5.1 1 General marking requirements 41

5.12 5.13 1 1 1.2 1.3 Normative references 11

Equipment to be tested (equipment under test/EUT) 13

procedures (PFVPs) to be provided by the manufacturer 16

General conditions for tests 17

Normal service conditions and requirements 24

Mechanical service conditions and requirements 25

Electrical service conditions and requirements 27

3 4 4.1 4.2 4.3 4.4 4.5 Functional power supply and memory back-up requirements 30

Main processing unit(s) and memory(ies) of the PLC-system requirements 39

Peripherals (PADTs, TES, HMIs) requirements 39

Mounting requirements 40

Requirements for normal service and functional type tests and verifications 41

Requirements for information on normal service and function 41

Normal service and functional type tests and verifications 41

6 6.1 6.2 6.3 6.4 6.5 6.6 6.7 6.8 6.9 Climatic tests 41

Mechanical tests 43

Verification of special functional requirements for power ports and memory back-up Special immunity limits for power ports 45

Verification of communication interface requirements 53

Verification of MPU requirements 53

Verification of remote I/O stations 53

Verification of peripheral (PADTs TES HMIs) requirements 54

Verification of PLC-system self-tests and diagnostics 54

Verif ¡cat ion of in pu t/outpu t requirements 50

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -General information to be provided by the manufacturer 54

7.1 Information on type and content of documentation 54

7.2 Information on compliance with this standard 55

7.3 Information on reliability 55

7.4 Information on other conditions 55

7.5 Information on shipping and storage 55

7.6 Information on a.c and d.c power supply 55

7.7 Information on digital inputs (current sinking) 56

7.8 7.9 Information on digital outputs for direct current (current sourcing) 57

7.10 Information on analogue inputs 57

7.1 1 Information on analogue outputs 58

7.1 2 Information on communication interfaces 59

7.13 7.14 Information on remote input/output stations (RIOSs) 60

7.15 Information on peripherals (PADTs, TES, HMIs) 61

7.1 6 8.1 General 61

8.2 Emission requirements 62

8.3 8.4 Requirements for EMC tests and verifications 68

8.5 Requirements for information on EMC 68

Electromagnetic compatibility (EMC) type tests and verifications 68

9.1 9.2 Test environment 69

9.3 9.4 9.5 Electrostatic discharge 70

9.6 9.7 9.8 Fast transient bursts 72

9.9 High-energy surges 73

9.1 O 9.1 1 Damped oscillatory wave (for zone C only) 75

9.12 Voltage drops and interruptions - Power port type tests and verifications 75

10 Electromagnetic compatibility (EMC) information to be provided by the 11 Safety requirements 77

11 1 Protection against electrical shock 77

11.2 11.3 1 1.4 1 1.5 Flame-retardant requirements for non-metallic materials 89

11.6 Temperature limits 90

1 1.8 Field-wiring terminals constructional requirements 91

7 Information on digital outputs for alternating currents (current sourcing) 56

Information on main processing unit(s) and memory(ies) of the PLC-system 59

Information on self-tests and diagnostics 61

Electromagnetic compatibility (EMC) requirements 61

8 EMC immunity requirements 62

9 Electromagnetic compatibility-related tests 68

Measurement of radiated interference 69

Measurement of conducted interference 69

Radiofrequency electromagnetic field - Amplitude modulated 71

Power-frequency magnetic fields 71

Conducted radiofrequency interference 74

manufacturer 76

Protection against the spread of fire 82

Limited power circuits 82

Clearance and creepage distances requirements 83

1 1.7 Enclosures 90

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` 4 ``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` 61131-2 O IEC:2003(E)

11.9 Provisions for protective earthing 91

11 11 Switching devices 93

11 12 Components 93

1 1 13 Battery requirements 94

11 14 Maximum voltage and minimum voltage 94

1 1 15 Markings and identification 94

11 16 Requirements for safety type tests and verifications 96

1 1.17 Requirements for safety routine tests and verifications 96

1 1 18 Requirements for information on safety 96

12 Safety type tests and verifications 96

12.1 Safety-related mechanical tests and verifications 96

12.2 12.3 Single-fault condition test - General 103

13 Safety routine tests 104

13.1 Dielectric withstand test 104

13.2 Dielectric withstand verification test 105

13.3 14 Safety information to be provided by the manufacturer 106

14.1 Information on evaluation of enclosures for open equipment (power 14.2 Information on mechanical terminal connection 106

1 1 1 O Wiring 92

Safety-related electrical tests 99

Protective earthing test 105

dissipation) 106

Annex A (informative) Illustration of PLC-system hardware definitions 107

Annex C (normative) Test tools 109

Annex B (informative) Digital input standard operating range equations 108

Annex D (informative) Zone C EMC immunity levels 112

Annex E (informative) Overvoltage example 114

Bibliography 115

Figure 1 EUT configurations 15

Figure 2 Typical interface/port diagram of a PLC-system 29

Figure 3 I/O Parameters 31

Figure 4 U-l operation regions of current-sinking inputs 33

Figure 5 Temporary overload waveform for digital a.c outputs 35

Figure 6 Temporary overload waveform for digital d.c outputs 37

Figure 7 Gradual shut-down/ctart-up test 46

Figure 8 Fast supply voltage variation test 46

Figure 9 Third harmonic immunity test 47

Figure 1 O Slow supply voltage variation test 49

Figure 11 EMC immunity zones 63

Figure 12 Impact withstand test procedure 97

Figure A 1 Programmable controller system (PLC-system) 107

Figure C l Jointed test finger 109

Figure 13 Dielectric withstand test procedures 102

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x

Figure C.3 100 mm x 4 mm test pin 110

Figure C.4 100 mm x 3 mm test pin 111

Figure E 1 Creepage distances of circuits where recurring peak voltages are generated 114

Table 1 General conditions for tests 17

Table 2 Operating ambient air temperature of PLC-systems 24

Table 3 Sinusoidal vibration service conditions for PLC-systems 26

Table 4 Free fall on concrete floor for portable and hand-held equipment 26

Table 5 Free fall on concrete floor in manufacturer's original packaging 27

Table 6 Rated values and operating ranges of incoming power supply 30

Table 7 Standard operating ranges for digital inputs (current sinking) 34

Table 8 Rated values and operating ranges for current sourcing digital a.c outputs 35

outputs 37

Table 9 Rated values and operating ranges (d.c.) for current sourcing digital d.c Table 10 Rated values and impedance limits for analogue inputs 38

Table 11 Rated values and impedance limits for analogue outputs 38

Table 12 Dry-heat and cold withstand tests 42

Table 13 Change of temperature, withstand and immunity tests 42

Table 14 Cyclic (12 + 12) damp-heat test 43

Table 15 Immunity vibration test 43

Table 16 Immunity shock test 44

Table 17 Free-fall immunity/withstand tests (portable and hand-held equipment) 44

Table 19 Insertions/withdrawals of removable units 45

Table 20 Voltage-ripple and frequency-range immunity test (1) 45

Table 21 Third harmonic immunity test 46

Table 22 Gradual shut-down/ctart-up test 48

Table 23 Supply voltage variation tests 48

Table 24 Back-up duration withstand test 49

Table 25 Change of energy source test 50

Table 26 Overload and short-circuit tests for digital outputs 51

Table 27 Emission limits 62

Table 28 EMC immunity zones 64

Table 29 Criteria to prove the performance of a PLC-system against EMC disturbances 64

Table 30 Radiated immunity and enclosure ports (1) Conducted immunity, Zones A-B 65

Table 18 Free-fall withstand test (units within manufacturer's original packaging) 44

Table 31 Conducted immunity, Zone B 66

Table 32 Conducted immunity, Zone A 67

Table 33 Voltage drops and interruptions 68

Table 34 Radiated emission measurement 69

Table 35 Conducted emission measurement 69

Table 36 Electrostatic discharge immunity test 70

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -Table 37 Radiated electromagnetic field immunity test 71

Table 38 Power frequency magnetic field immunity test 71

Table 39 Fast transient burst immunity test 72

Table 40 High-energy surge immunity test 73

Table 41 Conducted RF immunity test 74

Table 42 Damped oscillatory wave immunity test 75

Table 43 Voltage drop and interruption immunity test 76

Table 44 Operator accessibility for open and enclosed equipment 80

Table 45 Limits of output current and output power for inherently limited power sources 83

Table 46 Limits of output current, output power and ratings for over-current protective devices for non-inherently limited power sources 83

Table 47 Minimum clearances in air corresponding to overvoltage category II conditions (except for f ield-wi ri ng term i nals) for basic/ supplementary insu lation 84

Table 48 Minimum clearances in air corresponding to overvoltage category II conditions (except for field-wiring terminals) for double /reinforced insulation 85

Table 49 Minimum clearances in air at field-wiring terminals 85

Table 50 Minimum clearances in air for micro-environment where the voltages are known and controlled 86

Table 51 Classification of material group according to comparative tracking index (CTI) 87

Table 52 Minimum creepage distances for other than printed circuit boards (1) 87

Table 53 Minimum creepage distances for printed circuit boards ( I ) , (6), (9) (basic and supplementary insulation) 88

Table 54 Minimum creepage distances related to recurring peak voltages on printed wiring boards without protective coating (1) (pollution degrees 1 and 2) 89

Table 55 Temperature limits 90

Table 56 Impact withstand test (1) 96

Table 57 Operator accessibility tests (1) 97

Table 58 Dielectric withstand voltages for impulse a.c power frequency and d.c tests for bacic/cupplementary insulation (5) 101

Table 59 Dielectric withstand voltages for impulse a.c power frequency and d.c tests for double/reinforced insulation (5) 101

Table 60 Overload test circuit values 103

Table 61 Endurance test circuit values 103

Table 62 Routine dielectric withstand test (5) 105

Table D l Radiated immunity and enclosure ports (1) conducted immunity, Zone C 112

Table D.2 Conducted immunity, Zone C 113

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FDIS Report on voting

INTERNATIONAL ELECTROTECHNICAL COMMISSION

FOREWORD The IEC (International Electrotechnical Commission) is a worldwide organization for standardization comprising all national electrotechnical committees (IEC National Committees) The object of the IEC is to promote international co-operation on all questions concerning standardization in the electrical and electronic fields To this end and in addition to other activities, the IEC publishes International Standards Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work International, governmental and non-governmental organizations having liaisons with the IEC also participate in this preparation The IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations

The formal decisions or agreements of the IEC on technical matters express, as nearly as possible, an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested National Committees

The documents produced have the form of recommendations for international use and are published in the form

of standards, technical specifications, technical reports or guides and they are accepted by the National Committees in that sense

In order to promote international unification, IEC National Committees undertake to apply IEC International Standards transparently to the maximum extent possible in their national and regional standards Any divergence between the IEC Standard and the corresponding national or regional standard shall be clearly indicated in the latter

The IEC provides no marking procedure to indicate its approval and cannot be rendered responsible for any equipment declared to be in conformity with one of its standards

Attention is drawn to the possibility that some of the elements of this International Standard may be the subject

of patent rights The IEC shall not be held responsible for identifying any or all such patent rights

International Standard IEC 61 131-2 has been prepared by subcommittee 65B: Devices, of IEC technical committee 65: Industrial-process measurement and control

This second edition of IEC 61131-2 cancels and replaces the first edition published in 1992 and constitutes a technical revision

I 65B1470AIFDIS I 65B/481/RVD I

Full information on the voting for the approval of this standard can be found in the report on voting indicated in the above table

This publication has been drafted in accordance with the ISO/IEC Directives, Part 2

IEC 61 131 consists of the following parts under the general title Programmable controllers:

User guidelines Communications Reserved Fuzzy control programming Guidelines for the application and implementation of programming languages

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The committee has decided that the contents of this publication will remain unchanged until 2007

At this date, the publication will be

reconfirmed;

withdrawn;

amended

replaced by a revised edition, or

A bilingual version of this standard may be issued at a later date

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -INTRODUCTION

This part of IEC 61131 constitutes Part 2 of a series of standards on programmable controllers and the associated peripherals and should be read in conjunction with the other parts of the series

Where a conflict exists between this and other IEC standards (except basic safety standards), the provisions of this standard should be considered to govern in the area of programmable controllers and their associated peripherals

Compliance with Parts 1 and 2 of this standard cannot be claimed unless the requirements of 7.2 of this part are met

Service and physical environment requirements are specified in Clause 4 Functional requirements are specified in Clause 5 Electromagnetic compatibility requirements are specified in Clause 8 Safety requirements are specified in Clause 11

Terms of general use are defined in Part 1 of this standard More specific terms are defined in each part

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -PROGRAMMABLE CONTROLLERS -

1 General

This Part of IEC 61 131 specifies requirements and related tests for programmable controllers (PLC) and their associated peripherals (for example, programming and debugging tools (PADTs), human-machine interfaces (HMIs), etc.) which have as their intended use the control and command of machines and industrial processes

PLCs and their associated peripherals are intended to be used in an industrial environment and may be provided as open or enclosed equipment If a PLC or its associated peripherals are Intended for use in other environments, then the specific requirements, standards and installation practices for those other environments must be additionally applied to the PLC and its associated peripherals

This standard also applies to any products performing the function of PLCs and/or their associated peripherals

Equipment covered in this standard is intended for use in overvoltage category II (IEC 60664-1)

in low-voltage installations, where the rated mains supply voltage does not exceed a.c

1 O00 V r.m.s (50/60 Hz), or d.c 1 500 V (If PLCs or their associated peripherals are applied

in overvoltage category III installations, then additional analysis will be required to determine the suitability of the equipment for those applications.)

This standard does not deal with the functional safety or other aspects of the overall automated system PLCs, their application programme and their associated peripherals are considered as components of a control system

Since PLCs are component devices, safety considerations for the overall automated system including installation and application are beyond the scope of this standard However, PLC safety as related to electric shock and fire hazards, electrical interference immunity and error detecting of the PLC-system operation (such as the use of parity checking, self-testing diagnostics, etc.), are addressed Refer to I EC 60364 or applicable national/local regulations for electrical installation and guidelines

The object of this standard is

- to establish the definitions and identify the principal characteristics relevant to the selection and application of PLCs and their associated peripherals;

- to specify the minimum requirements for functional, electrical, mechanical, environmental and construction characteristics, service conditions, safety, EMC, user programming and tests applicable to PLCs and the associated peripherals

This Part also specifies

a) service, storage and transportation requirements for PLCs and their associated peripherals (Clause 4);

b) functional requirements for PLCs and their associated peripherals (Clause 5);

c) EMC requirements for PLCs and their associated peripherals (Clause 8);

d) safety requirements for PLCs and their associated peripherals (Clause 11);

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -f) test methods and procedures that are to be used for the verification of compliance of

PLCs and their associated peripherals with the requirements (5.12, 8.5, 11.18 and Clause 13)

The tests are type tests or production routine tests, and not tests related to the ways PLC systems are applied

When compliance with this Part of IEC 61131 is indicated without qualification, compliance with all clauses, including all tests and verifications required in this part, must be verified

Moreover, the manufacturer’s obligations expressed in this part are not waived if no type test

is required, or if the test conditions are restricted for practical reasons

When compliance with some portion of this Part of IEC 61 131 is indicated, it is only necessary

to verify compliance with those clauses against which the compliance claim is made The

manufacturer’s obligations as indicated above are still applicable The smallest unit of this

part for compliance purposes shall be a clause, such as Clauses 5, 8 or 11

Compliance with a portion of this Part of IEC 61131 is provided to facilitate efforts with

respect to particular conformity assessment requirements (for example, Clause 8 as the

compliance requirement for the EU electromagnetic compatibility directive or Clause 11 as the compliance requirement for the EU low-voltage directive)

Compliance with constructional requirements and with requirements for information to be provided by the manufacturer shall be verified by suitable examination, visual inspection and/or measurement

All requirements not tested according to the clauses on tests and verifications shall be verifiable under a procedure to be agreed to by the manufacturer and the user

The manufacturer shall provide, on request, compliance verification information for all require-

ments referenced in the claims of compliance with all or a portion of this Part of IEC 61131

It is the manufacturer’s responsibility to ensure that delivered PLC equipment and associated peripherals are equivalent to the sample(s) which have been type-tested according to this

Part of IEC 61 131 and therefore that they comply with all requirements of this part

Significant modifications shall be indicated through the use of suitable revision level indexes and markings (see 5.1 1 and 11.15) and shall comply with this Part of IEC 61 131

NOTE A new type test may be required to confirm compliance

Where the manufacturer is allowed to select among several options, he shall clearly specify in his catalogues and/or datasheets those to which any portion of the PLC-system equipment

complies This applies to severity classes of voltage drops (¡.e P S I or PS2) and types of

digital inputs (¡.e Type 1 or Type 3)

All relevant functions and parts of the EUT (¡.e units and modules) shall be functioning in such a way that the information paths to/from these functions and parts are exercised

The following referenced documents are indispensable for the application of this document

For dated references, only the edition cited applies For undated references, the latest edition

of the referenced document (including any amendments) applies

IEC 60068-2-1 :1990, Environmental testing - Part 2: Tests - Tests A: Cold

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -IEC 60068-2-2:1974, Environmental testing - Part 2: Tests - Tests B: Dry heat

IEC 60068-2-6: 1995, Environmental testing - Part 2: Tests - Test Fc: Vibration (sinusoidal)

IEC 60068-2-1 4: 1984, Environmental testing - Part 2: Tests - Test N: Change of temperature

IEC 60068-2-27:1987, Environmental testing - Part 2: Tests - Test Ea and guidance: Shock

heat, cyclic (12 + 12-hour cycle)

IEC 60068-2-31:1969, Environmental testing - Part 2: Tests - Test Ec: Drop and topple, primarily for equipment-type specimens

IEC 60068-2-32:1975, Environmental testing - Part 2: Tests - Test Ed: Free fall (Procedure 1)

IEC 60529: 1989, Degrees of protection provided by enclosures ( I f Code)

IEC 60664-1 :I 992, Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests

IEC 60664-3: 1992, Insulation coordination for equipment within low-voltage systems - Part 3: Use of coatings to achieve insulation coordination of printed board assemblies

IEC 60695-2-1 (all sheets), Fire hazard testing - Part 2: Test methods - Section 1: Glow-wire test and methods

IEC 60707: 1999, Flammability of solid non-metallic materials when exposed to flame sources

- List of test methods

IEC 60947-5-1 :I 997, Low-voltage switchgear and controlgear - Part 5-1: Control circuit

devices and switching elements - Electromechanical control circuit devices

- Terminal blocks for copper conductors

IEC 61 000-4-2: 1995, Electromagnetic compatibility (EMC) - Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test

IEC 61 000-4-3:2002, Electromagnetic compatibility (EMC) - Part 4-3: Testing and measurement techniques - Radiated radio-frequency electromagnetic field immunity test

techniques - Section 4: Electrical fast transienüburst immunity test

IEC 61 000-4-5: 1995, Electromagnetic compatibility (EMC) - Part 4-5: Testing and measurement techniques - Surge immunity test

IEC 61 000-4-6: 1996, Electromagnetic compatibility (EMC) - Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances induced by radio-frequency fields

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -ment techniques - Power frequency magnetic field immunity test

IEC 61 000-4-1 2: 1995, Electromagnetic compatibility (EMC) - Part 4-12: Testing and measurement techniques - Oscillatory waves immunity test

IEC 6101 0-1 :2001, Safety requirements for electrical equipment for measurement, control,

and laboratory use - Part 1: General requirements

CISPR 11 :I 999, Industrial, scientific and medical (ISM) radio-frequency equipment -

Electromagnetic disturbance characteristics - Limits and methods of measurement

CISPR 16-1 : 1999, Specification for radio disturbance and immunity measuring apparatus and

methods - Part 1: Radio disturbance and immunity measuring apparatus

CISPR 16-2: 1999, Specification for radio disturbance and immunity measuring apparatus and

methods - Part 2: Methods of measurement of disturbances and immunity

2 Type tests

The object of this clause is to define how to verify compliance of the PLC and the associated peripherals with the requirements set forth in this part of IEC 61131 This compliance verification includes

- verification by type tests given in 5.12, 8.5 and 11.18,

- verification by suitable examination, visual inspection or/and measurement

These tests are qualification tests, and not tests related to the ways PLCs are employed According to the scope of this standard, the above compliance verification may not cover the verification of the ability of the PLC-system to satisfy the intended automated system requirements Where needed, special tests, not covered by this standard, shall be agreed to

by the manufacturer and the user

In addition, routine tests are specified in Clause 13

NOTE Peripherals, used in the same environment as the PLC-system, must meet the same requirements as the PLC-system

Equipment to be tested (equipment under test/EUT)

Combination of tests/EUTs/test programmes shall be such that one may reasonably think that any configuration built by the user according to the manufacturer's specifications and installation instructions would pass satisfactorily the same tests, and will properly function in normal operation, which these tests are intended to reflect

Unless otherwise specified in this standard, the manufacturer may elect to use various EUTs

to achieve the objectives of a given type test

If an EUT representing a basic PLC or a remote I/Os (RIOS) is of modular structure, it shall

fulfil the following minimum requirement

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -All types of modules shall be represented in 1 or several EUT configurations in which any mix

of modules is permissible

All types of modules shall be configured in the EUTs and tested at least once

NOTE The application of statistical criteria based on samples for a large number of 110s (for example, >loo) may

Appropriate catalogued options, such as power supply units, application memory(ies), processing unit(s) etc shall be used to build the relevant EUT(s)

If a local bus extension is part of the PLC-system and if its maximum cable length cable is less than, or equal to, 3 m, it is considered to be an internal PLC bus As such, it should not

be considered a port for test

If a local bus extension is part of the PLC-system and is capable of driving cables with a length of >3 m, then only 1 end of the link is part of the EUT and it is considered as a communication port

When new units/modules are introduced after initial release of a PLC-system catalogue, which has already been satisfactorily tested according to this standard, EUT(s) simpler than those originally used can be defined This is only permissible if such EUTs and the associated test programmes provided by the manufacturer allow proper verification as if these new units/modules had been tested within the originally tested EUTs

Unless otherwise specified in this standard, the manufacturer may elect either that each type test be conducted on a new EUT or that several type tests be performed successively on the same EUT

Certain tests can be easily targeted at a single item, others are more appropriate to a set of items configured together Equipment to be tested must reflect this need See specific test clauses for recommendations for EUTs

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -61 131-2 O IEC:2003(E) - 1 5 -

Interfaceslports shown are meant to represent major/example links, not all links Most EUTs will have multiple interface/ports active during testing

Interfaced devices and signals

power

Control power

t

Limit of the scope

of this standard

IEC 460/03

Each subpart of the PLC-system as shown in Figure 2 may constitute an EUT represented in Figure 1 as EUT A, B, C, D, E and/or F To exercise the different ports of each EUT, the manufacturer may define subsystems and the different EUTs are tested in turn

Only 1 subsystem is under test at any time, the others being considered as auxiliary equipment

For instance, to achieve a given test on the EUT A, equipment of the other EUTs may be connected but are not in the test bed

For example, to check the electrical interference immunity of the PLC-system, the manufacturer may choose between the following, as applicable:

- to build a single global EUT including the PADT/TE/RIOSs, and check the whole configuration; or

- to define a suite of simpler EUTs (for example, a PLC-system without any PADT/TE/RIOS, and a single PADT and a single RIOS and a single PADT and a single TE, or any other suite of partial combinations of them which make sense) but correspondingly exercise the appropriate ports of each EUT with an equipment part of the test bed (the laboratory equipment necessary to test the EUT) as would do the missing PADT/TE/RIOSs For practical reasons, the manufacturer may elect to use actual PADTs/TEs/RIOSs to exercise the EUT ports

At least 1 of each type or a representative number of I/O ports of the EUT must be connected and be functional

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -A selection of the representative functional modes shall be made considering that only the most typical functions of the PLC can be tested

In general, the module which is in the manufacturer’s catalogue should be tested alone, providing that mixing several modules does not affect the result of the test Refer to those clauses dealing with withstand tests for specifics

Type tests shall be conducted on the EUT(s) defined in 2.1, unless otherwise specified

For each test, the manufacturer shall

- specify how this configuration shall be installed and externally connected;

- provide the suitable test programmes which shall be run during the test;

- provide the proper operation verification procedure including the way to measure accuracy and temporary deviations of analogue VOS

The appropriate test programmes and proper functioning verification procedures provided by the manufacturer shall satisfy the requirements given in 2.5

2.5

During the type tests, there shall be no

- destruction of hardware, unless required by the test;

- modification of the operating system and test programmes and/or alteration of their execution;

- unintended modification of system and application data stored or exchanged;

- erratic or unintended behaviour of the EUT;

- deviation of the analogue I/Os out of the limits specified in item 4 of 710.2 and item 3

of 7.11.2

Requirements for test programmes and proper functioning verification procedures (PFVPs) to be provided by the manufacturer

All the I/O and communication channels of the EUT shall be exercised

NOTE It is acceptable to apply statistical criteria based on samples, for large number of VOS, etc (for example,

>loo)

All external and internal product status information reporting means, such as displays, lamps, alarm signals, self-test result registers, shall be exercised The test procedures shall include conditions to verify the related activities

All various PLC-system operation modes significant for the user’s implementation such as start-up and shut-down, cold/warm/hot restart, “normal run”, “normal stop”, “programme/ monitor with PADTs”, etc., as applicable, shall be verified for performance and behaviour

Initialization and reset conditions of all system components shall be checked for controlled start-up and shut-down The various modes, such as “run”, “programme”, “monitor”, shall be verified for performance and behaviour

Any special feature/performance not covered in this standard but necessary for the proper operation of the basic PLC-system shall be exercised and tested

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -The tests shall be carried out in accordance with the appropriate test procedure

The tests shall be carried out under the general test conditions given in Table 1, unless otherwise specified

Unless otherwise specified, no sequence is imposed for type tests

Mains power supply Tem peratu re Relative humidity Barometric pressure Output loads Pollution

Rated voltage and frequency

3 Terms and definitions

For the purposes of this Part of IEC 61 131, the following terms and definitions, in addition to those given in IEC 61 131-1, apply

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -3.7

coating, protective

covering of suitable insulating material that encloses the clearance and/or creepage distance

of the printed wiring board and conforms to the surface of the board in such a manner that the environment is excluded and the clearance and/or creepage distance can withstand the required impulse and continuous potential

NOTE Coating is normally applied to exclude the effects of atmosphere and to increase the dielectric properties of the clearance andlor creepage distances that would not normally be adequate without coating A less effective coating may exclude the atmosphere, but cannot be relied on to enhance the dielectric properties

3.8

comparative tracking index (CTI)

numerical value of the maximum voltage at which a material withstands 50 drops of ",CI solution (ammonia chloride) without tracking

digital input, type 1

device for sensing signals from mechanical contact switching devices, such as relay contacts, push-buttons, switches, etc Converts an essentially two-state signal to a single-bit binary number

NOTE Type 1 digital inputs may not be suitable for use with solid-state devices such as sensors, proximity switches, etc

3.13

device for sensing signals from solid-state switching devices such as 2-wire proximity switches Converts an essentially 2-state signal to a single-bit binary number

NOTE 1 Two-wire proximity switches described here are designed to IEC 60947-5-2

NOTE 2 This class could also be used for Type 1 or Type 3 applications

3.14

device for sensing signals from solid-state switching devices such as 2-wire proximity switches Converts an essentially 2-state signal to a single-bit binary number

NOTE 1 This class could also be used for Type 1 applications

NOTE 2 Type 3 digital inputs offer lower power characteristics then Type 2 digital inputs Generally, this allows much higher input channel densities per module or product Type 3 differs from Type 2 in that it is compatible with those IEC 60947-5-2 devices that offer low current in the off state See Table 7 for details of operating ranges Proximity switch compatibility is such that a high percentage of proximity switches having Type 2 compatibility will also have Type 3 compatibility

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equipment which is enclosed on all sides with the possible exception of its mounting surface

to prevent personnel from accidentally touching live or moving parts contained therein and to protect the equipment against ingress of medium-size solid foreign bodies, and meeting requirements of mechanical strength, flammability, and stability (where applicable) Protection degree must be 2 IP20

equipment under test (EUT)

representative configuration(s), as defined by the manufacturer, used for type tests (see Clause 2)

functional earthing conductor

conductor that is in electrical contact with, for example, Earth, for purposes of interference immunity improvement

3.25

hand-held equipment

equipment which is intended to be held in one hand while being operated with the other hand

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immunity (to a disturbance)

ability of a device, equipment or system to perform without degradation in the presence of an electromagnetic disturbance

[I EV 60 1 6 1 -0 1 -2 O]

NOTE Not used exclusively to refer to EMC in this standard It may also refer, for example, to vibration, humidity, etc

3.28

immunity type test (immunity test)

type test verifying that the basic PLC-system operation is not altered by the application of specified influencing quantities that are intended to approximate normal operation

3.29

insulation

NOTE 1

(To) insulate - To prevent conduction between separate conductive bodies [IEV 60151-03-281

(To) isolate - To disconnect completely a device or circuit from other devices or circuits

NOTE 2 To provide (by separation) a specified degree of protection from any live circuit [IEV 60151-03-291

3.29.1

basic insulation

insulation of hazardous live parts, which provides basic protection against electric shock under fau It-f ree conditions

Insulation can be a solid, a liquid, a gas (for example, air), or any combination [IEV 60151-03-30]

[IEV 60195-06-06 and IEV 60195-06-01]

NOTE This concept does not apply to insulation used exclusively for functional purposes Such insulation is referred to as functional insulation

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -interface

shared boundary between a considered system and another system, or between parts of

a system, through which information or electrical energy is conveyed

3.31

internal wiring

wiring which is inside the PLC-system equipment, which is installed by the manufacturer

3.32

i so I a ted (d evi ces, ci rc u its)

devices or circuits without galvanic connection between them

3.33

live part

conductor or conductive part intended to be energized in normal operation, including a neutral conductor, but by convention not a PEN conductor or PEM conductor or PEL conductor

NOTE This concept does not necessarily imply a risk of electric shock [IEV 60195-02-191

PEN conductor - conductor combining the functions of both a protective earthing conductor and a neutral conductor [IEV 60195-02-121

PEM conductor - conductor combining the functions of a protective earthing conductor and a mid-point conductor PEL conductor - conductor combining the functions of both a protective earthing conductor and a line conductor [IEV 60195-02-131

[IEV 601 95-02-14]

[IEV 60195-02-191

3.34

mains power supply

power from the conductors/mains of the permanent installation of the building at the supply voltage to the PLC-system

ambient conditions which surround the clearance or creepage distance being reviewed

NOTE The micro-environment of the clearance or creepage distance and not the environment of the equipment determines the effect of the insulation The micro-environment may be better or worse than the environment of the equipment It includes all factors influencing the insulation, such as climatic, electromagnetic, pollution, etc (IEC 60664)

module containing multiple input and/or output signal interfaces These signal interfaces could

be isolated or not isolated from each other

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -NOTE Normal service conditions are stated in Clause 4

3.43

overvoltage category (of a circuit or within an electrical system)

classification based on limiting (or controlling) the values of prospective transient overvoltages occurring in a circuit (or within an electrical system having different nominal voltages) and depending upon the means employed to influence the overvoltages

[IEC 60664-11

NOTE In an electrical system, the transition from 1 overvoltage category to another of lower category is obtained through appropriate means complying with interface requirements These interface requirements may be an overvoltage protective device or a series-shunt impedance arrangement capable of dissipating, absorbing, or diverting the energy in the associated surge current, to lower the transient overvoltage value to that of the desired lower overvoltage category

Equipment covered in this standard is intended for use in overvoltage category II

3.44

permanent installation

portion of the PLC-system which is required to perform the intended application function

NOTE See Annex A

3.45

pollution degree (in the micro-environment)

for the purpose of evaluating clearances and creepage distances, 3 degrees of pollution in the micro-environment are established

NOTE 1 The conductivity of a polluted insulation is due to the deposition of foreign matter and moisture

NOTE 2 The minimum clearances given for pollution degrees 2 and 3 are based on experience rather than on fundamental data

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protective extra-low voltage (PELV) circuit

electrical circuit in which the voltage cannot exceed a.c 30 V r.m.s., 42,4 V peak or d.c 60 V

in normal and single-fault condition, except earth faults in other circuits

A PELV circuit is similar to an SELV circuit that is connected to protective earth

3.50

protective impedance

single component regarded as fault-free, a combination of components, or a combination of basic insulation and a current- or voltage-limiting device, the impedance, construction and reliability of which are such that when connected between parts which are hazardous live and accessible conductive parts, it provides protection to the extent required by this standard in normal and single-fault condition

3.51

recurring peak voltage

peak value of a generated voltage whose characteristic is recurring at some specified period

safety extra-low voltage circuit (SELV circuit)

electrical circuit in which the voltage cannot exceed a.c 30 V r.m.s., 42,4 V peak or d.c 60 V

in normal and single-fault condition, including earth faults in other circuits

An SELV circuit is not connected to protective earth

3.54

service personnel

person changing or repairing the PLC hardware configuration or the application programme

NOTE The service person may also install software updates provided by the manufacturer They are assumed to

be trained in the programming and operation of the PLC equipment and its use

They are persons having the appropriate technical training and experiences necessary to be aware of hazards - in particular, electrical hazards - t o which they are exposed in performing a task and of measures to minimize danger

to themselves or to other persons or to the equipment

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -Type of limit Temperature range

3.55

total output current (of an output module)

current that a multi-channel module operating at the most adverse combination of normal operation can supply without any part of it (insulation, terminals, exposed conductive parts, etc.) exceeding the specified temperature limits

NOTE For a multi-channel module, the total output current is generally less than the sum of the output currents of the channels

Open equipment Enclosed equipment

3.58

withstand type test (withstand test)

type test verifying that the application of more severe influencing quantities to the basic PLC- system does not impair its ability to assume its intended mission

3.59

working voltage

highest value of the a.c (r.m.s) or d.c voltage across any particular insulation which can occur when the equipment is supplied at rated voltage (Ue)

NOTE 1 Transients are disregarded

NOTE 2 Both open-circuit conditions and normal use are taken into account

It is the user's responsibility to ensure that the equipment service conditions are not exceeded The PLC and PLC-system is intended to be used in an industrial environment

The user must ensure the installation conditions match the environmental conditions given in this standard

The equipment shall be suitable for the operating temperature ranges given by the following Table 2

I Average temperature over 24 h I Max I 35 OC I 35 "C I 50 "C

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``,`,`,,,``````,,``,,``,,,,`,-`-`,,`,,`,`,,` -For enclosed non-ventilated equipment that is cooled by natural air convection, the equipment ambient air temperature is the room temperature 1 m away from the surface of the enclosure

on a horizontal plane located at the vertical mid-point of the enclosure

For enclosed ventilated equipment, the equipment ambient temperature is the temperature of the incoming air

For open equipment, the ambient air temperature is the temperature of the incoming air immediately below the equipment

No forced external cooling is assumed Open peripherals, which are intended to be permanently installed as part of the PLC-system, shall meet the operating temperature range

Mechanical service conditions and requirements

For the purpose of this standard, the service conditions are indirectly defined by the following requirements which apply to fixed equipment as well as to unpackaged portable and hand- held equipment (see exceptions in 4.2.2) They do not apply to equipment containing assemblies other than PLC-systems and/or associated peripherals

Experience shows that equipment meeting these requirements is suitable for industrial use on stationary installations

Fixed equipment is that which is part of the permanent installation

Immunity requirements are:

Tiêu đề	IEC 61131-2 Programmable Controllers Equipment Requirements and Tests
Chuyên ngành	Electrical Installations and Control Systems
Thể loại	Standards Document
Năm xuất bản	2003

Định dạng
Số trang	135
Dung lượng	5,56 MB